To determine the average number of miles Keilantra needs to ride each day for the next 4 days to meet her goal, we can set up the following equation.
- Total miles she wants to ride: 28.8 miles
- Miles she has already ridden: 4 miles
- Miles left to ride: \( 28.8 - 4 = 24.8 \) miles
- Number of days left to ride: 4 days
Let \( m \) represent the average number of miles she needs to ride each day. The equation that represents the total miles she needs to ride over the next 4 days is:
\[ 4m = 24.8 \]
Now, solve for \( m \):
\[ m = \frac{24.8}{4} \] \[ m = 6.2 \]
Thus, Keilantra needs to ride an average of 6.2 miles per day for the next 4 days to meet her goal of riding 28.8 miles this week.